1. PET/CT Dementia Research Center; Juntendo Tokyo Koto Geriatric Medical Center; Juntendo University School of Medicine; Tokyo Japan
2. Department of Psychiatry; Juntendo Tokyo Koto Geriatric Medical Center; Juntendo University School of Medicine; Tokyo Japan
3. Department of Neurology; Juntendo Tokyo Koto Geriatric Medical Center; Juntendo University School of Medicine; Tokyo Japan